ABSTRACT
Background@#Aleutian mink disease virus (AMDV) causes major economic losses in fur-bearing animal production. The control of most AMDV outbreaks is complex due to the difficulties of establishing the source of infection based only on the available on-farm epidemiological data. In this sense, phylogenetic analysis of the strains present in a farm may help elucidate the origin of the infection and improve the control and biosecurity measures. @*Objectives@#This study had the following aims: characterize the AMDV strains from most outbreaks produced at Spanish farms between 2012–2019 at the molecular level, and assess the utility of the combined use of molecular and epidemiological data to track the possible routes of infection. @*Methods@#Thirty-seven strains from 17 farms were partially sequenced for the NS1 and VP2 genes and analyzed phylogenetically with other strains described worldwide. @*Results@#Spanish AMDV strains are clustered in four major clades that generally show a good geographical correlation, confirming that most had been established in Spain a long time ago. The combined study of phylogenetic results and epidemiological information of each farm suggests that most of the AMDV outbreaks since 2012 had been produced by within-farm reservoirs, while a few of them may have been due to the introduction of the virus through international trade. @*Conclusions@#The combination of phylogenetic inference, together with epidemiological data, helps assess the possible origin of AMDV infections in mink farms and improving the control and prevention of this disease.
ABSTRACT
La incidencia de fractura de cadera ha aumentado, por envejecimiento de la población e incremento de su prevalencia en áreas urbanas. Cuando se presenta en pacientes centenarios, resulta un desafío quirúrgico del cual poco se ha reportado. El objetivo del presente trabajo es estudiar una pequeña casuística de ellos. Pacientes y método: se definió como paciente centenario, quien al presentar fractura de cadera tuviera 99 años cumplidos. Ellos fueron operados si su daño orgánico cerebral era leve, si no estaban postrados y no portaban patologías limitantes de su rehabilitación o sobrevida a 1año. Se revisó retrospectivamente la casuística del Servicio de Traumatología, entre 01/04/1999 y 3 1/03/2006. Se comparó sobrevida con datos estadísticos de población centenaria general en periodo estudiado. Resultados: se efectuaron 8 operaciones a seis pacientes, todas mujeres, edad promedio 100.2 años (rango 99-102). La comorbilidad más frecuente fue hipertensión arterial (3 de 6 casos) e infección urinaria ( 3/6). No hubo diabetes mellitus. En todos se usó anestesia raquídea, la cirugía consistió en reducción más inserción de tornillo dinámico de cadera en 5 casos, placa de compresióndinámica en 2 y prótesis parcial en una paciente. El promedio de hospitalización postoperatoria total fue 13,1 días (rango 5- 25), 2 presentaron complicaciones, no hubo mortalidad hospitalaria. La sobrevida fue similar a población general de igual edad sin fractura. Los resultados obtenidos permiten concluir que es posible abordar en nuestro medio, el desafío ético que significa tratar quirúrgicamente fracturas de caderas en pacientes centenarios.
The incidence of hip fracture has increased, due to population aging and augmentation of prevalence in urban areas. Centenarian patients suffering from hip fracture are a surgical challenge, with limited reporting in medical literature. The purpose of this paper is to communicate the results of small groupof them. Patients and method: all patients older than 99 year old were considered as centenarians.They were operated only if they did not suffer from dementia, prostration or limiting severe diseases that could diminish one year survival or full rehabilitation. Their record and chinical folder were studied retrospectively from 01/04/1999 until 31/03/2006 and survival compared with general centenarian population during the same period. Results: six patients underwent 8 operations, all were female, mean age 100,2 years (range 99-102). Three of 6 suffered from hipertensión, 3/6 from urinary infection. No diabetes was found. Surgery was done under regional anaesthesia, in 5 operations a dynamic hip screw was implanted, dynamic compression plate in 2 and parcial prosthesis was used in other. The average total postoperative time in the hospital was 13,1 days (range 5-25), 2 patients suffered from postoperative complications. There were no intrahospital mortality and survival was similar to the general centenarian population with no hip fractures. In view of this results, it is nowadays reasonable to face the ethical challenge to operate hip fractures in centenarian patients.